This site is mainly for the Linux beginners to study Linux in shortest time !!!
For advance Linux users, you can ignore tutorial articles and just focus on advanced topics!!!

You can follow below guides:

For the Linux beginners

setup env

Firstly you need one Linux environment for your study, the easiest way is to setup one virtual machine. I suggest you to use virtual box and download installed distribution from virtualimages.com.setup virtualbox Linux OS
When you have Linux OS, you need install VIM and study how to use it. VIM is used when you edit any files.install VIMVIM introduction

study cmds

After you have Linux OS, you can start to play all kinds of commands in terminal. You can find examples for common used commands, or check all commands manpages.cmds commoncmds examplecmds manpages

study script

When you are familar with some basic commands, the next step is to study shell, by shell you can complete some complex and repeat tasks. For Linux OS, the popular shell is bash.bash